- Agriculture 5
- Plant Sciences 4
- Applied Microbiology 3
- Microbiology 3
- Science, Humanities and Social Sciences, multidisciplinary 3
- Science, multidisciplinary 3
- Soil Science & Conservation 3
- Bacteriology 2
- Biomedical Engineering/Biotechnology 2
- Ecology 2
- Food Microbiology 2
- Forestry 2
- Plant Physiology 2
- Effects of Radiation/Radiation Protection 1
- Microbial Ecology 1
- Plant Breeding/Biotechnology 1
- Sustainable Development 1